Questions tagged [bernoulli]

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Theory of rotationally symmetric air cushion vehicle

I am trying to develop a theory for this situation: A small blown-up balloon is attached to the center of a compact disc; you let it float as the balloon discharges. Simplifying assumptions: ...
r4r4's user avatar
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Isn't the Bernoulli equation just a special case of the Steady-flow equation?

This question is about the following two energy balance equations (assuming no energy input/output): Bernoulli: $\frac{p}{\rho} +\frac {v^2}{2} + zg = const.$ Steady-flow: $u +\frac {p}{\rho} +\frac{...
Braden Cutajar's user avatar
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Help calculating discharge rate from a reservoir as the water level drops?

I could do with some help calculating the discharge rate from a reservoir and factoring in how that flow will decrease as the head of water decreases. The information I have is: Maximum height of ...
Sean's user avatar
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Efflux velocity for system with air and liquid

I want to calculate the efflux velocity for this open vessel with area $A_1$ with a small outlet with area $A_2$ as a function of time. The atmospheric pressure is $p_0$. The vessel has height $h = h_{...
Wim Nevelsteen's user avatar
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Bernoulli head losses

For a Venturi, I calculated total head theoretically and experimentally. I noticed that the last point along the Venturi has not got the same as the start point total head? Shouldn’t it be the same ...
Emmanuel's user avatar
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Should I pursue airfoils with higher or lower peaks (I am doing wind power in science olympiad and am designing a mini wind turbine)?

I am a beginner in wind power, but I know the basics. The Bernoulli effect: Air travelling over the curved edge travels more distance over the same amount of time than the straight side. Due to this, ...
Nolan Soo's user avatar
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1 answer
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Velocity value in a pipe junction when we're applying the energy equation

I'm trying to understand how to apply the energy equation at a junction of 3 pipes. For example, when we are considering points A and D, should we consider that velocity at point D just before the ...
Simion I.'s user avatar
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What happens when electrolytic process rotameters are swapped for a much bigger one?

electrolytic process rotameter were swapped for much bigger rotameters. Inlet pipes are the still the same. What effect does the bigger rotameter have in the concentration of catholyte in the cell?
Sibila's user avatar
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Why is the stagnation pressure equal to the atmospheric pressure in the test section of an open-circuit wind tunnel?

I understand Bernoulli's Principle at different sections of the wind tunnel (static and dynamic pressure), and that it is equal to the atmospheric pressure (hence open-circuit). However, I don't ...
user41543's user avatar
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1 answer
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Find pressure, given 2 velocities at open end of pipe and inside pipe, at different elevations

There is a tube travelling horizontally, 8m below the ground, with a diameter 15cm. It then turns upwards and at a height of 1.75m above the ground, it shoots water out with a velocity 32 m/s. Find ...
Shiven Agarwal's user avatar
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why the gage pressure of a fluid is zero at locations where the HGL intersects the fluid?

I have searched for answers to this, but so far I have not found any consistent answers. Please, may anyone help me understand this.
user....'s user avatar
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3 answers
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Increasing air velocity through F1 car diffuser

I am looking into F1 car aerodynamics for a course that I am taking. I understand that because of Bernoulli's law, when the velocity increases, the pressure decreases, which is good for F1 cars if we ...
Spinnaker's user avatar
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1 answer
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Quantifying the reaction force on fixed tubing connected to a peristaltic pump

I am not sure how I should consider the forces due to hydrostatic pressure when calculating the reaction force due to a fluid being pumped through fixed tubing with a peristaltic pump that I am using ...
WnGatRC456's user avatar
-1 votes
2 answers
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Incompressible Fluid Flow in horizontal pipe segment which encounters tilted pipe segment - Continuity Equation

Say that we have water flowing horizontally in a pipe of constant diameter. The continuity equation for incompressible fluids, which is a statement of mass conservation, guarantees that the flow rate ...
MattGeo's user avatar
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Fluid Mechanics Question

I am preparing for GATE(Chemical). I need the answer of this question part 2 (question 54) as I am not able to find the mistake in my logic. I have applied the logic here as: Initial energy stored in ...
VanDer Waal's user avatar